3C16721.
3C16721.book Page ii Wednesday, July 7, 1999 3:05 PM 3Com Corporation ■ 5400 Bayfront Plaza Copyright © 1999, 3Com Technologies. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without written permission from 3Com Technologies.
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3C16721.book Page 5 Wednesday, July 7, 1999 3:05 PM INTRODUCTION Welcome to the world of networking with 3Com® . In the modern business environment, communication and sharing information is crucial. Computer networks have proved to be one of the fastest modes of communication but, until recently, only large businesses could afford the networking advantage. The OfficeConnect® product range from 3Com has changed this, bringing networks to the small office.
3C16721.book Page 6 Wednesday, July 7, 1999 3:05 PM CREATING YOUR NETWORK Fast Ethernet Hub 4 and Hub 8—Front Alert LED Power LED orange Alerts you to excessive network use or a partitioned 100BASE-TX port. green Indicates that the power supply to the hub is present. Activity LED (Hub 4 only) yellow Flashes each time a packet is received on a port. Collision LED Port Status LEDs yellow Flashes each time a collision is detected at the hub. Collisions are part of normal network operation.
3C16721.book Page 7 Wednesday, July 7, 1999 3:05 PM Fast Ethernet Hub 4 and Hub 8—Rear POWER Uplink/Normal 8 1X Power adapter socket Uplink/Normal switch 100BASE-TX RJ-45 ports Only use the power adapter that is supplied with this OfficeConnect hub. Do not use any other adapter. Affects the operation of the highest numbered port (port 4 on Hub 4 and port 8 on Hub 8). For connecting the port to a workstation, set to Normal (out).
3C16721.book Page 8 Wednesday, July 7, 1999 3:05 PM Fast Ethernet Hub 12—Front Alert LED Power LED Collision LED Port Status LEDs Network Utilization LEDs orange Alerts you to excessive network use or a partitioned 100BASE-TX port. green Indicates that the power supply to the hub is present. yellow Flashes each time a collision is detected at the hub. Collisions are part of normal network operation. green/yellow Indicates the status of each port. If nothing is connected, the LED is off.
3C16721.book Page 9 Wednesday, July 7, 1999 3:05 PM Fast Ethernet Hub 12—Rear POWER Uplink/Normal 6X 1X 12 7X Power adapter socket Uplink/Normal switch 100BASE-TX RJ-45 ports Only use the power adapter that is supplied with this OfficeConnect hub. Do not use any other adapter. Affects the operation of the highest numbered port (port 12). For connecting the port to a workstation, set to Normal (out). For connecting the port to another OfficeConnect unit, set to Uplink (in).
3C16721.book Page 10 Wednesday, July 7, 1999 3:05 PM 3 One ‘Straight-through’ 100BASE-TX cable for each Before You Start workstation or piece of equipment. A ‘Straight-through’ cable is one where the pins of one connector are connected to the same pins of the other connector; refer to Figure 5 on page 16. 100BASE-TX cable must be data grade (Category 5) shielded or unshielded. We recommend that you use shielded cable. The maximum length you can use is 100m (328ft).
3C16721.book Page 11 Wednesday, July 7, 1999 3:05 PM To fit another unit: Stacking the Units Together 1 Rest the second unit on top of the clip and align it with the front of the unit below. The Rubber Feet 2 Press down gently on the unit to secure it onto the clip, The four self-adhesive rubber feet prevent your hub from moving around on your desk. Only stick the feet to the marked areas at each corner of the underside of your hub if you intend to place the unit directly on top of the desk.
3C16721.book Page 12 Wednesday, July 7, 1999 3:05 PM For Hub 12: Make two screw holes 142mm (5.6in.) apart. Use the guide at the at the back of this manual to mark the position of the holes. Positioning Your OfficeConnect Hub When installing your OfficeConnect hub, ensure: ■ It is out of direct sunlight and away from sources of heat. ■ Cabling is away from power lines, fluorescent lighting fixtures, and sources of electrical noise such as radios, transmitters and broadband amplifiers.
3C16721.book Page 13 Wednesday, July 7, 1999 3:05 PM Connecting Workstations and Other Equipment to Your Hub Connecting OfficeConnect Hubs Together You can increase the number of workstations that can connect to your network by adding another OfficeConnect hub. WARNING: Please read the ‘Important Safety Information’ section before you start. You can directly connect together a maximum of two Fast Ethernet hubs.
3C16721.book Page 14 Wednesday, July 7, 1999 3:05 PM Connecting 100BASE-TX Hubs Connecting to 10BASE-T Networks You can connect two OfficeConnect hubs together, as seen in Figure 4, with 100BASE-TX in a number of ways, but for simplicity we recommend the following method: Your OfficeConnect Hub can be connected to a 10BASE-T network through an OfficeConnect switch (for example, an OfficeConnect Dual Speed Switch 8).
3C16721.book Page 15 Wednesday, July 7, 1999 3:05 PM PROBLEM SOLVING The OfficeConnect hub has been designed to aid you when detecting and solving possible problems with your network. These problems are rarely serious; the cause is usually a disconnected or damaged cable, or incorrect configuration. If this section does not solve your problem, contact your supplier for information on what to do next.Perform these actions first: ■ Ensure all equipment is powered on.
3C16721.book Page 16 Wednesday, July 7, 1999 3:05 PM Figure 5 Port Status LED not lit for a port that has a connection. There is a problem with this particular connection. Check that the equipment connected to the hub is powered on, operating correctly, and contains a 100BASE-TX connection. The hub can only be directly connected to equipment that can provide a 100Mbps connection (not 10Mbps only).
3C16721.book Page 17 Wednesday, July 7, 1999 3:05 PM NETWORKING TERMINOLOGY A Network is a collection of workstations (for example, IBM-compatible PCs) and other equipment (for example, printers), connected for the purpose of exchanging information or sharing resources. Networks vary in size, some are within a single room, others span continents. A Network Loop occurs when two pieces of network equipment are connected by more than one path.
3C16721.book Page 18 Wednesday, July 7, 1999 3:05 PM DIMENSIONS AND STANDARDS Dimensions and Operating Conditions OfficeConnect Fast Ethernet Hub 4 4 VA 14 BThU/hr power 12 VA 40 BThU/hr power requirement 225mm (9in.) 35.8mm (1.4in.) 0 to 40°C (32 to 105°F) operating temperature 0 to 90% (non-condensing) humidity OfficeConnect Fast Ethernet Hub 12 0 to 90% (non-condensing) humidity 500g (1.1lb) OfficeConnect Fast Ethernet Hub 8 225mm (9in.) 35.8mm (1.4in.
3C16721.book Page 19 Wednesday, July 7, 1999 3:05 PM Standards Functional: ISO 8802/3 IEEE 802.3 Safety: UL 1950, EN 60950 CSA 22.2 #950 IEC 950 EMC: EN 55022 Class B† EN 50082-1 FCC Part 15 Class B†* ICES-003 Class B VCCI Class B† CNS 13438 Class A Environmental: EN 60068 (IEC 68) †Category 5 screened cables must be used to ensure compliance with the Class B requirements of this standard. The use of unscreened cables (category 3 or category 5) complies with the Class A requirements.
3C16721.book Page 20 Wednesday, July 7, 1999 3:05 PM ENVIRONMENTAL STATEMENTS It is the policy of 3Com Corporation to be environmentally-friendly in all operations. To uphold our policy, we are committed to: End Of Life Statement 3Com processes allow for the recovery, reclamation and safe disposal of all end-of-life electronic components. ■ Establishing environmental performance standards that comply with national legislation and regulations.
3C16721.book Page 21 Wednesday, July 7, 1999 3:05 PM IMPORTANT SAFETY INFORMATION WARNING: Warnings contain directions that you must follow for your personal safety. Follow all directions carefully. You must read the following safety information carefully before you install or remove the unit: ■ Exceptional care must be taken during installation and removal of the unit. ■ Only stack the OfficeConnect hub with other OfficeConnect units.
3C16721.book Page 22 Wednesday, July 7, 1999 3:05 PM WICHTIGE SICHERHEITSHINWEISE WARNHINWEIS: Warnhinweise enthalten Anweisungen, die Sie zu Ihrer eigenen Sicherheit befolgen müssen. Alle Anweisungen sind sorgfältig zu befolgen. Sie müssen die folgenden Sicherheitsinformationen sorgfältig durchlesen, bevor Sie das Geräts installieren oder ausbauen: ■ Bei der Installation und beim Ausbau des Geräts ist mit höchster Vorsicht vorzugehen.
3C16721.book Page 23 Wednesday, July 7, 1999 3:05 PM CONSIGNES IMPORTANTES DE SÉCURITÉ AVERTISSEMENT: Les avertissements présentent des consignes que vous devez respecter pour garantir votre sécurité personnelle. Vous devez respecter attentivement toutes les consignes. Nous vous demandons de lire attentivement les consignes suivantes de sécurité avant d’installer ou de retirer l’appareil: ■ Faites très attention lors de l'installation et de la dépose du groupe.
3C16721.book Page 24 Wednesday, July 7, 1999 3:05 PM TECHNICAL SUPPORT 3Com provides easy access to technical support information through a variety of services. This section describes these services. This service provides access to online support information such as technical documentation and software, as well as support options that range from technical education to maintenance and professional services. Information contained in this section is correct at time of publication.
3C16721.book Page 25 Wednesday, July 7, 1999 3:05 PM Support from Your Network Supplier Support from 3Com If you require additional assistance, contact your network supplier. Many suppliers are authorized 3Com service partners who are qualified to provide a variety of services, including network planning, installation, hardware maintenance, application training, and support services.
3C16721.book Page 26 Wednesday, July 7, 1999 3:05 PM Here is a list of worldwide technical telephone support numbers: Country Telephone Number Country Telephone Number Asia, Pacific Rim Australia Hong Kong India Indonesia Japan Malaysia New Zealand Pakistan Philippines 1 800 678 515 800 933 486 +61 2 9937 5085 001 800 61 009 0031 61 6439 1800 801 777 0800 446 398 +61 2 9937 5085 1235 61 266 2602 P.R. of China 10800 61 00137 or 021 6350 1590 800 6161 463 Singapore S. Korea From anywhere in S.
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3C16721.book Page 28 Wednesday, July 7, 1999 3:05 PM Returning Products for Repair Before you send a product directly to 3Com for repair, you must first obtain a Return Material Authorization (RMA) number. Products sent to 3Com without authorization numbers will be returned to the sender unopened, at the sender’s expense.
3C16721.book Page 29 Wednesday, July 7, 1999 3:05 PM 3Com Corporation LIMITED WARRANTY media with software which substantially conforms to applicable 3Com published specifications. Customer assumes responsibility for the selection of the appropriate applications program and associated reference materials.
3C16721.book Page 30 Wednesday, July 7, 1999 3:05 PM pre-authorized by 3Com with a Return Material Authorization (RMA) number marked on the outside of the package, and sent prepaid and packaged appropriately for safe shipment, and it is recommended that they be insured or sent by a method that provides for tracking of the package. The repaired or replaced item will be shipped to Customer, at 3Com's expense, not later than thirty (30) days after 3Com receives the defective product.
3C16721.book Page 31 Wednesday, July 7, 1999 3:05 PM DISCLAIMER Some countries, states, or provinces do not allow the exclusion or limitation of implied warranties or the limitation of incidental or consequential damages for certain products supplied to consumers, or the limitation of liability for personal injury, so the above limitations and exclusions may be limited in their application to you.
3C16721.book Page 32 Wednesday, July 7, 1999 3:05 PM ELECTROMAGNETIC COMPATIBILITY VCCI STATEMENT FCC STATEMENT This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules, and the Canadian Department of Communications Equipment Standards entitled, “Digital Apparatus,” ICES-003. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
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3C16721.book Page 35 Wednesday, July 7, 1999 3:05 PM 35 Wall mounting screw hole guide Fast Ethernet Hub 12 142mm (5.6in.) Wall mounting screw hole guide Fast Ethernet Hub 4 and 8 150mm (5.9in.
Part No. DUA 1672-1AAA03 Published June 1999 3C16721.
